In an insubstantial or weak manner..
This "average" is the mode for the class.
Yes, in this case "seventh-grade class" should have a hyphen to show that the words "seventh" and "grade" are functioning as a single adjective modifying the noun "class."
Top 6th grade class is 601 honors
It is the same in America, only it is called 6th grade, not class.
The nouns in the sentence are teacher and class. The words "fourth grade class" can be considered a compound noun, or the compound word "fourth grade" can be considered a noun adjunct, where grade is also a noun.
Sergeant First Class is pay grade E7. In the Army, the next pay grade - E8 - has two ranks within it - Master Sergeant, and First Sergeant. The difference being that a First Sergeant is a company's senior NCO, whereas Master Sergeant tends to denote NCOs holding staff positions.
If there was only one assignment, your grade in the class is the grade received on that assignment.
No. The class you originally took will count towards your GPA, along with the class you're taking over.
This year, the 2015-2016 school year, the class of 2019 would be in 9th grade.
Mrs. Lucas's class
Mrs. Montoye's Class
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